Diego Carlos of FC Nantes recently become part of a controversy when French referee Tony Chapron sent him off by showing a red card in a Frensch Ligue-1 match between FC Nantes and Paris-St Germain. He admitted on Tuesday that he was left flummoxed after referee's decision. "I did not understand at the time what had happened," the 24-year-old told Nantes' website. "He fell to the ground and then I looked at him when he gave me a kick on the leg and I said 'what have you done?' and then he gave me a yellow and a red." In the 87th minute of the match, Carlos unintentionally collided with the match referee Chapron. The 45-year-old referee stumbled and fell to the ground and kicked Diego Carlos with his right boot and flourished a second yellow card at Carlos. Watch: How French referee Tony Chapron 'tackled' Diego Carlos The red card has since been rescinded, making him available for Wednesday's match at Toulouse. "I am very happy that I will be able to play at Toulouse," he added.